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Radius :: Radius (n.) A right line drawn or extending from the center of a circle to the periphery; the semidiameter of a circle or sphere.

Radial :: Radial (a.) Of or pertaining to a radius or ray; consisting of, or like, radii or rays; radiated; as, (Bot.) radial projections; (Zool.) radial vessels or canals; (Anat.) the radial artery..

Radius :: Radius (n.) A ray, or outer floret, of the capitulum of such plants as the sunflower and the daisy. See Ray, 2..

Radiale :: Radiale (n.) The bone or cartilage of the carpus which articulates with the radius and corresponds to the scaphoid bone in man.

Radiuses :: Radiuses (pl. ) of Radiu.

Semidiameter :: Semidiameter (n.) Half of a diameter; a right line, or the length of a right line, drawn from the center of a circle, a sphere, or other curved figure, to its circumference or periphery; a radius..

Radii :: Radii (n.) pl. of Radius.

Radian :: Radian (n.) An arc of a circle which is equal to the radius, or the angle measured by such an arc..

Hanse :: Hanse (n.) That part of an elliptical or many-centered arch which has the shorter radius and immediately adjoins the impost.

Hyporadius :: Hyporadius (n.) One of the barbs of the hypoptilum, or aftershaft of a feather. See Feather..

Quicken :: Quicken (a.) To shorten the radius of (a curve); to make (a curve) sharper; as, to quicken the sheer, that is, to make its curve more pronounced..

Secant :: Secant (a.) A right line drawn from the center of a circle through one end of a circular arc, and terminated by a tangent drawn from the other end; the number expressing the ratio line of this line to the radius of the circle. See Trigonometrical function, under Function..

Epipodiale :: Epipodiale (n.) One of the bones of either the forearm or shank, the epipodialia being the radius, ulna, tibia, and fibula..

Cathetus :: Cathetus (n.) One line or radius falling perpendicularly on another; as, the catheti of a right-angled triangle, that is, the two sides that include the right angle..

Vector :: Vector (n.) Same as Radius vector.

Ulna :: Ulna (n.) The postaxial bone of the forearm, or branchium, corresponding to the fibula of the hind limb. See Radius..

Radius :: Radius (n.) The movable limb of a sextant or other angular instrument.

Radius :: Radius (n.) The barbs of a perfect feather.

Unity :: Unity (n.) Any definite quantity, or aggregate of quantities or magnitudes taken as one, or for which 1 is made to stand in calculation; thus, in a table of natural sines, the radius of the circle is regarded as unity..

Radio- :: Radio- () A combining form indicating connection with, or relation to, a radius or ray; specifically (Anat.), with the radius of the forearm; as, radio-ulnar, radio-muscular, radio-carpal..

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